A large blast hits the gas pipeline in the industrial park due to a sudden earthquake, which triggers massive explosions and engulfs the neighboring area in flames. Facing the escalating fire danger, the Fire and Rescue Force quickly reaches the hazardous zone to hold the fire and cut a firebreak, in the meantime, many survivors are pulled out of the rubble.
Cui Tiejun, Xu Guozhu, and Pan Jianghai, known as the Trident of the city police come together to fight crime.
Tang Jiayu, a cardiac surgeon who has practiced abroad for many years, is invited by Vice President Liu Feng to return to China and lead the Heart Center at Beijing Anhe Jisheng Hospital. Along the way, Tang Jiayu finds personal growth and happiness in her career.
